Bulk Data Entry This parameter can be used to request only the modes (structural or coupled) that satisfy the lower bound of frequency, for H3D output.

Parameter Values Description
LFREQH3D <Real> (Hertz)

No default (See Comment 3)

Modes with frequencies below this value are not output in the H3D file.


  1. This parameter only applies to H3D output and does not affect the calculations during the simulation.
  2. This parameter works for complex eigenvalue and normal mode analysis, but only for the structural modes or coupled modes.
  3. If PARAM, LFREQH3D is used without specifying a value, the simulation will error out.